blob: 84848605eb4fe61bf9e92c5b9465e6064a2a00e7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
require 'dependable'
require 'build_environment'
# A base class for non-formula requirements needed by formulae.
# A "fatal" requirement is one that will fail the build if it is not present.
# By default, Requirements are non-fatal.
class Requirement
include Dependable
extend BuildEnvironmentDSL
attr_reader :tags, :name
def initialize(*tags)
@tags = tags.flatten.compact
@tags << :build if self.class.build
end
# The message to show when the requirement is not met.
def message; "" end
# Overriding #satisfied? is deprepcated.
# Pass a block or boolean to the satisfied DSL method instead.
def satisfied?
result = self.class.satisfy.yielder do |proc|
instance_eval(&proc)
end
infer_env_modification(result)
!!result
end
# Overriding #fatal? is deprecated.
# Pass a boolean to the fatal DSL method instead.
def fatal?
self.class.fatal || false
end
# Overriding #modify_build_environment is deprecated.
# Pass a block to the the env DSL method instead.
def modify_build_environment
satisfied? and env.modify_build_environment(self)
end
def env
@env ||= self.class.env
end
def eql?(other)
other.is_a?(self.class) && hash == other.hash
end
def hash
message.hash
end
private
def infer_env_modification(o)
case o
when Pathname
self.class.env do
unless ENV["PATH"].split(":").include?(o.parent.to_s)
append("PATH", o.parent, ":")
end
end
end
end
class << self
def fatal(val=nil)
val.nil? ? @fatal : @fatal = val
end
def build(val=nil)
val.nil? ? @build : @build = val
end
def satisfy(options={}, &block)
@satisfied ||= Requirement::Satisfier.new(options, &block)
end
end
class Satisfier
def initialize(options={}, &block)
case options
when Hash
@options = { :build_env => true }
@options.merge!(options)
else
@satisfied = options
end
@proc = block
end
def yielder
if instance_variable_defined?(:@satisfied)
@satisfied
elsif @options[:build_env]
require 'superenv'
ENV.with_build_environment do
ENV.userpaths!
yield @proc
end
else
yield @proc
end
end
end
end
|
